Someone with a graphing calculator please help!

[cirteomonogirt]

I don't have access to a graphing calculator and have tried many online ones, but all of them give me some type of error saying that the function can not be graphed.

The height of the water in an ocean harbour, from domain 0<t<25, is given by the function h=5.2cos(0.5t-3pi)+6.5 .

a) graph the function on a graphing calculator and state the number of tidal cycles that are shown.


B)state the time for the first tide of the day, correct to the nearest minute.


c)state the exact equation of the sinusoidal axis


d) what is the exact time for one complete cycle of the tide?


e) state the times of the day between noon your and midnight when there will be at least 6m of water in the harbour. express answers correct to the nearest min

 

[pka]

You do not need a calculator to do this.
You have web access.
Learn to use this website.

 

[cirteomonogirt]

You do not need a calculator to do this.
You have web access.
Learn to use this website.

Thanks for that! Love the site

Only problem is that the questions are asking me to provide answers in minutes but the site only shows numbers e.g.:5,10,15.
Or am I doing something wrong?



edit: so the first 5 on the x-axis is 5am? The site doesn't tell me when I put my mouse over the map what point I am on. Can you please explain to me how I would express that in minutes

 

[pka]

Only problem is that the questions are asking me to provide answers in minutes but the site only shows numbers e.g.:5,10,15.

I have no idea what you mean by that statement.
A graph is a graph is a graph.

 

[cirteomonogirt]

I have no idea what you mean by that statement.
A graph is a graph is a graph.

The graph's x-axis is labelled from 0-25. Is that in hours, e.g. 5 on the x-axis is (5:00am) and 14 on the x-axis is (2:00pm)?
How would I answer questions b and e which ask me to state times to the nearest minute, since that site doesn't show me what coordinates I am on when I move the mouse to certain points on the graph.

These were the questions I was referring to:
B)state the time for the first tide of the day, correct to the nearest minute.


e) state the times of the day between noon your and midnight when there will be at least 6m of water in the harbour. express answers correct to the nearest min

 

[pka]

The graph's x-axis is labelled from 0-25. Is that in hours, e.g. 5 on the x-axis is (5:00am) and 14 on the x-axis is (2:00pm)?
How would I answer questions b and e which ask me to state times to the nearest minute, since that site doesn't show me what coordinates I am on when I move the mouse to certain points on the graph.

These were the questions I was referring to:
B)state the time for the first tide of the day, correct to the nearest minute.


e) state the times of the day between noon your and midnight when there will be at least 6m of water in the harbour. express answers correct to the nearest min

Again I have no idea what any of that means.
This is a classic example. A scientist ​asks a mathematician what a certain expression is. The scientist is told. Then he/she asks what it means. The mathematician is almost always says "how would I know?"

 

[cirteomonogirt]

Again I have no idea what any of that means.
This is a classic example. A scientist ​asks a mathematician what a certain expression is. The scientist is told. Then he/she asks what it means. The mathematician is almost always says "how would I know?"

haha sorry man. Could you do me a favour and answer either b or e.
Or make a similar example question asking for the answer in nearest minutes, and solve it. That way i could see how you do it.